/* CSS Design System for CuidadorHub - Dark Sophisticated Theme (No Purple) */

:root {
    --bg-main: #0a0f1d;
    --bg-surface: rgba(16, 24, 48, 0.7);
    --bg-surface-hover: rgba(22, 34, 68, 0.85);
    --bg-header: rgba(10, 15, 29, 0.85);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-hover: rgba(0, 229, 255, 0.3);
    
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-cyan: #00e5ff;
    --accent-teal: #0df5c4;
    --accent-blue: #2563eb;
    
    --glow-cyan: rgba(0, 229, 255, 0.15);
    --glow-blue: rgba(37, 99, 235, 0.2);
    
    --grad-title-start: #ffffff;
    --grad-title-end: #a5f3fc;
    
    --btn-secondary-hover: rgba(255, 255, 255, 0.05);
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-stack: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

[data-theme="light"] {
    --bg-main: #f8fafc;
    --bg-surface: rgba(255, 255, 255, 0.85);
    --bg-surface-hover: rgba(255, 255, 255, 0.95);
    --bg-header: rgba(248, 250, 252, 0.85);
    --border-color: rgba(15, 23, 42, 0.1);
    --border-color-hover: rgba(37, 99, 235, 0.4);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --accent-cyan: #0284c7;
    --accent-teal: #0d9488;
    --accent-blue: #1d4ed8;
    
    --glow-cyan: rgba(2, 132, 199, 0.05);
    --glow-blue: rgba(29, 78, 216, 0.08);
    
    --grad-title-start: #0f172a;
    --grad-title-end: #0284c7;
    
    --btn-secondary-hover: rgba(15, 23, 42, 0.05);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-stack);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header & Navbar */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--bg-header);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.logo-accent {
    color: var(--accent-cyan);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition-smooth);
}

.nav-links a:hover {
    color: var(--accent-cyan);
}

.theme-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
    padding: 0;
}

.theme-btn:hover {
    background: var(--btn-secondary-hover);
    color: var(--accent-cyan);
    transform: rotate(20deg) scale(1.1);
}

.theme-btn svg {
    stroke: currentColor;
    fill: none;
    width: 20px;
    height: 20px;
    stroke-width: 2;
    transition: var(--transition-smooth);
}

/* Toggle Sun/Moon icons depending on active theme */
.sun-icon {
    display: none;
}
.moon-icon {
    display: block;
}

[data-theme="light"] .sun-icon {
    display: block;
}
[data-theme="light"] .moon-icon {
    display: none;
}

/* Hero Section */
.hero {
    position: relative;
    padding: 180px 0 100px;
    text-align: center;
    overflow: hidden;
}

.hero-bg-glow {
    position: absolute;
    top: -10%;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.12) 0%, rgba(37, 99, 235, 0.05) 50%, transparent 100%);
    filter: blur(80px);
    z-index: 0;
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1.5px;
    background: linear-gradient(135deg, var(--grad-title-start) 30%, var(--grad-title-end) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-weight: 400;
}

/* Buttons */
.hero-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    font-weight: 600;
    border-radius: 50px;
    text-decoration: none;
    transition: var(--transition-smooth);
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue) 100%);
    color: #020617;
    box-shadow: 0 4px 20px var(--glow-cyan);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 229, 255, 0.35);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--btn-secondary-hover);
    border-color: var(--text-secondary);
    transform: translateY(-2px);
}

/* Sections Header */
.solutions-section, .labs-section, .faq-section {
    padding: 100px 0;
    border-top: 1px solid var(--border-color);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--grad-title-start) 40%, var(--grad-title-end) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Grid & Cards (Glassmorphism) */
.grid-solutions {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 2rem;
}

.card {
    position: relative;
    background: var(--bg-surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition-smooth);
}

.card-content {
    padding: 2.2rem;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    z-index: 2;
}

.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(800px circle at var(--x, 0px) var(--y, 0px), rgba(0, 229, 255, 0.06), transparent 40%);
    z-index: 1;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.card:hover .card-glow {
    opacity: 1;
}

.card:hover {
    transform: translateY(-6px);
    border-color: var(--border-color-hover);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.25), 0 0 15px var(--glow-cyan);
    background: var(--bg-surface-hover);
}

.card-icon-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.card-icon {
    color: var(--accent-cyan);
    width: 32px;
    height: 32px;
    stroke-width: 1.5;
}

/* Badges */
.badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-play {
    background: rgba(37, 99, 235, 0.15);
    color: #60a5fa;
    border: 1px solid rgba(37, 99, 235, 0.3);
}

.badge-web {
    background: rgba(13, 245, 196, 0.1);
    color: var(--accent-teal);
    border: 1px solid rgba(13, 245, 196, 0.2);
}

.badge-beta {
    background: rgba(245, 158, 11, 0.1);
    color: #fbbf24;
    border: 1px solid rgba(245, 158, 11, 0.2);
}

.badge-ai {
    background: rgba(6, 182, 212, 0.15);
    color: var(--accent-cyan);
    border: 1px solid rgba(6, 182, 212, 0.3);
}

/* Card details */
.card-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 0.8rem;
    color: var(--text-primary);
}

.card-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    flex-grow: 1;
}

.card-link {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--accent-cyan);
    text-decoration: none;
    transition: var(--transition-smooth);
    display: inline-flex;
    align-items: center;
}

.card-link:hover {
    color: var(--text-primary);
    transform: translateX(4px);
}

.card-link-placeholder {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-muted);
}

/* Lab Section customization */
.labs-section {
    background: linear-gradient(180deg, var(--bg-main) 0%, rgba(13, 245, 196, 0.02) 100%);
}

.card-testing {
    border-style: dashed;
}

/* FAQ Section Styling (SEO & AEO Friendly) */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.faq-item {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem 1.5rem;
    transition: var(--transition-smooth);
}

.faq-item[open] {
    border-color: var(--border-color-hover);
    box-shadow: 0 4px 15px rgba(0, 229, 255, 0.05);
}

.faq-question {
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-primary);
    cursor: pointer;
    outline: none;
    list-style: none;
    position: relative;
    padding-right: 2rem;
}

.faq-question::-webkit-details-marker {
    display: none;
}

.faq-question::after {
    content: '+';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.5rem;
    color: var(--accent-cyan);
    transition: var(--transition-smooth);
}

.faq-item[open] .faq-question::after {
    content: '−';
    transform: translateY(-50%) rotate(180deg);
}

.faq-answer {
    margin-top: 1rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

/* Footer Section */
.footer {
    padding: 60px 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-content p {
    color: var(--text-secondary);
    font-weight: 400;
    font-size: 1rem;
}

.footer-sub {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 0.5rem;
}

/* Responsiveness */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        justify-content: center;
        gap: 0.8rem;
        height: auto;
        padding: 1rem 0;
    }
    
    .hero {
        padding: 140px 0 60px;
    }
    
    .hero-title {
        font-size: 2.4rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
        gap: 0.8rem;
    }
    
    .btn {
        width: 100%;
        max-width: 280px;
    }
}